Owner's manual

UAD Powered Plug-Ins Manual - 498 - Chapter 51: UA 610-B Tube Preamp

Output Level Controls

Level Level (aka “the big knob”) is used to control the gain of

the tube output stage of the preamp. Higher values add

more coloration and provides amplification to the feed-

back-style EQ circuitry.

The amount of available gain using this control is ap-

proximately 61 dB.

Output Output adjusts the signal level at the output of the plug-in without

effecting the sonic character of the signal. The range is from –∞

dB (off) to +12 dB.

This control, which does not exist on the original hardware, facil-

itates the ability to increase the Level control for output stage tube

coloration while maintaining the ability to cleanly adjust the overall output vol-

ume.

Tip: Click the “0” label text above the control to return Output to 0 dB.

The 610-B features high and low frequency boost/cut shelving filters with

stepped gain controls. The equalizers utilize a feedback-style design which ef-

fects the distortion characteristics of the output stage.

Low EQ The low frequency (“LO”) shelf EQ has a selectable cutoff fre-

quency which can be cut or boosted by various amounts.

Lo EQ Frequency

This switch determines the cutoff frequency (70, 100, or 200

Hz) of the low shelf EQ. This switch has no effect if the Lo EQ

Gain value is zero.

Note: Like the hardware, low frequency values are not con-

secutively ordered.